Device for attaching coverings to rolls



I F. w. HQLMES. DEVICE FOR ATTACHING COVERINGS T0 ROLLS.

APPLICATION FILED APR. 1?, 1919- 1,332,467. Patented Mar. 20.

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ATTORNEY.

F. W. HOLMES.

DEVICE FOR ATTACHING COVERINGS TO ROLLS.

. APPLICATION FILED APR. 17, 1919- 3 339 4 7, Pat nted Mar. 2, 1920.

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UNITED STATES PATENT UFFTQE.

FRED W. HOLMES, OF LGWELL, MASSACHUSETTS.

DEVICE FOR ATTACHING SO JEBINGS TO ROLLS.

Application filed April 17', 1919.

To all whom it may concern:

Be it known that l, FRED /V. Homers, a citizen of the United States, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful improvements in Devices for Attaching Coverings to Rolls, of which the following is a specification.

This invention relates to covering rolls such as are used extensively in textile n1achines like cap spinning and twisting frames. Such rolls are made of metal, and the rims thereof are covered with leather or other similar material. As they run in contact with other rolls and usually the yarn traverses from side to side on them, no cement yet discovered will hold the leather to the metal, nd the result is that the leather very soon becomes loose and must be replaced.

As now, made, there is usually an inner covering layer of leather cemented to the metal and an outer covering layer cemented to the inner layer. The two layers of leather will stick together, but the inner layer will not stick to the metal.

This invention is for the purpose of firmly holding the covering layer, especially the inner covering layer, to the metal, more particularly at the edges. The method of attaching is simple and inexpensive, and the result is that the inner layer can be com pressed radially but cannot work nor crawl circumferentially.

Whether cement is or is not used with my device, loose spots and air blisters are prevented, and if the rolling crystallizes the ocment between the inner layer and the metal, no harm is done.

In the drawings, Figure 1 is a side elevation of the back top roll of a cap spinning frame, with the covering layer attached in accordance with my invention. Fig. 2 is a se tional elevation showing part of a rim, with the inner covering layer split to receive the clamping band. Fig. 3 shows the first position of my clamping band as it is forced into place. Fig. 4 shows the inner web of the clamping band bent outward into an annular channel whereby it is clamped in position. Fig. 5 is a section showing the inner and outer covering layers clamped and cemented into place. Fig. 6 is a section on line 66 of Fig. 5. Fig. 7 is similar section showing a modification Specification of Letters Patent.

Patented Mar. 2, 1920.

Serial No. 290,743.

of my clamping band. Fig. 8 is an enlarged sectional detail view similar to Fig. 5 showing another method of attachment. Fig. 9 is a section on line 9-9 of Fig. 8. Fig. 10 is a perspective view of one of my bands. Fig. 11 is an enlarged detail sectional view showing several methods by which I can treat my clamping band so as to hold it more firmly in the leather. Fig. 12 shows in perspective a curved clamping band, not of annular form. but of curved shape. Fig. 13 is a detail showing a single covering layer without slits and a clamping band without cement.

A represents a roll of the type to which my invention is applicable, having a hub B, supporting web 10, a rim 11, and an outer face or surface 13, and two ribs 9, which form outwardly extending annular channels 12 on each side of web 10.

G is the inner covering layer shown as of the usual material, which is leather. The first step is to cement this to the outer rim face 13. Annular slits 30 are then cut in each edge on centers which preferably coincide with the center of the roll. These slits 30 form two lips 33 and 34, as shown in Fig. 2.

One of my clamping bands F is shown in Fig. 10. It is made of sheet metal of substantially U-shaped cross section, the opening of the U being at the side, and includes an outer web 41, a middle part 40, and an inner web 42.

These are made of such. size that the outer web 41 will exactly fit into a slit 30, and so that the inner web 42 will fit just inside of a lip 9. See Fig. 3.

The second step in the process is to force 41 into 30 and 42 inside of 9.

Preferably. before this is done, each slit 30 should be filled with cement or each outer web 41 should be smeared with cement.

The next step is to roll or bend each inner web 42 outwardly into a channel 12, thus clamping each band F and the inner covering layer C in position. These steps are shown in Figs. 2, 3 and 4.

When the inner layer is thus not only cemented but clamped in position and the lips of the slots also cemented, the outer covering layer D is stretched and cemented into position, where it will be firmly held by the cement between it and the inner layer.

1 find it desirable in some cases to form the edge of the outer web 41 of the band F with teeth 44:, as shown in Fig. 6. When so formed, these teeth project into the channel 30 almost to the inner edge 31 thereof, but permit the cement to hold together the parts of the lips 33 nd 34; between the saw teeth, thus helping to counteract any tendency of the edges of C to roll.

As shown in Fig. 7, instead of cutting a slit such as 30, I may force the teeth a l into the edge of C, thus cutting zigzag slits 35. In this case, the teeth extend into the material while the material extends out to the point 36, and no cement is necessary.

As shown in Figs. 8 and 9, instead of slitting the edges of the inner covering ,layer, I may force the outer web 41 of the clamping band over the outer edge of the inner covering layer, and then clamp it in position as-shown in Fig. 8.

In this construction, I may form the band L with separated teeth 50, as shown in Fig. 9. These teeth projecting in at intervals help to-hold the inner layer in position, at the same time leaving room for the cement between the inner and the outer layer. N represents the cement.

In Fig. 11, I show a band F in place in inner layer C. After it is in place and preferably before the outer layer is cemented on, I can pass over it a roller, such as 61. which will depress the metal of the outer web forming a rib. as shown at 60, together with the adjoining leather, thus helpingto hold and clench the band in the holding position.

I may also use a roller, such as 63, to bend over or upset the interior edge 62 so that it will bite into the adjoining leather.

I may also, by means of a needle or punch 64 driven through the leather and outer web 41, as shown at 65, so upset and express the metal at 66 that it will hold it firmly in place.

While I prefer to use a single roll clamp of annular band form, I may use a plurality of bands, such as shown at M in Fig. 12. Each of such roll clamps is substantially U- shaped in cross section, the outer web 81 and inner web 82 having curved surfaces similar to portions of the curved surface of a cylinder. The middle section 80 may have a flat surface, but its inner and outer edges are curved concentrically to conform with the curve of the outer and inner webs.

Such a roll clamp, band or clip 'of such curved form, when made of relatively pliable or ductile sheet metal, or other material of such composition that the edges of its inner web can be bent outward into an annular channel, will keep its shape and position much better than will a short clip, the surfaces of the inner and outer webs of which are fiat, and the inner and outer edges of themiddle portion of which are straight.

The curved edges of the middle portion hold the webs in position, and prevent them from bending.

As shown in Fig. 13, I may use only a single covering layer, such as H, in which preferably annular grooves 70 and 71 are cut or pressed, into which the outer webs 41 of the bands F can be sunk. I believe that I am the first to use, in connection with around pulley, one annular band on each side or several curved bands, extending from an interior annular groove out around the rim and over the edge of such a covering layer, and I therefore claim such invention.

I claim:

1. In a roll having a rim and outwardly extending annular channels inside thereof, the combination of an inner covering layer for the rim having an annular slit in each edge, with two annular sheet metal bands each of substantially U-shaped cross section each having an outer web formed with teeth and which extends over an edge of such inner covering layer into one of said slits and an inner web which extends under the rim and is bent outward into a channel, and an outer covering layer cemented to such inner covering layer. the lips of each slit being cemented together and to the interposed web.

2. In a roll having a rim and outwardly extending annular channels inside thereof, the combination of an inner covering layer for the rim having an annular slit in each edge, with two annular sheet metal bands each of substantially U-shaped cross section each having an outer webwhich extends over an edge of such inner covering laver into one of said slits and an inner web which extends under the rim and is bent outward into a channel, and an outer covering layer cemented to such inner covering layer, the lips of each slit being cemented together and to the interposed web.

3. In a roll having a rim and outwardly 110 extending annular channels inside thereof, the combination of an inner covering layer for the rim with two annular sheet metal bands each of substantially LI-shaped cross section each having an outer web formed 115 with teeth and which extends over an edge of such inner covering layer and an inner web which extends under the rim and is bent outward into a channel, and an outer covering layer cemented to such inner covering 120 layer.

4. In a roll having a rim and outwardly extending annular channels inside thereof, the combination of an inner covering layer for the rim with two annular sheet metal bands each of substantially U-shaped cross section each having an outer web which extends over an edge of such inner covering layer and an inner web which extends under and an outer covering layer cemented to such inner covering layer.

5. In a roll having a rim and an outwardly extending annular channel inside thereof, the combination of a covering layer for the rim with an annular sheet metal band, of substantially U-shaped cross section having an outer web which extends over an edge of such covering layer and an inner web which extends under the rim and is bent outward into said channel.

6. A roll clamp consisting of an annular sheet metal band of substantially U-shaped cross section having an outer Web, a middle section and an inner web, the opening of the U being at the side.

7. A roll clamp consisting of an annular sheet metal band of substantially U-shaped cross section having an outer web formed with teeth a middle section and an inner web, the opening of the U being at the side.

8. A roll clamp consisting of a metal band of substantially Ushaped cross section having an outer web with a curved surface, an inner Web with a curved surface, and a middle section connecting them, the connecting edges of such middle section being curved.

In testimony whereof I have afiiXed my signature.

FRED W. HOLMES. 

